Measure the space in your garage for the cabinet, using a measuring tape.
Write down a cut list, using pencil and paper. You should have two sides, a top, a bottom, and a back. Also calculate the number of shelves you would like. Subtract the thickness of the sides on the top, bottom, and shelves.
Cut all parts out of 3/4-inch white melamine with a circular saw. Make sure the parts are cut square and to exact size.
Drill pilot holes in the sides for screws with a power drill and a 1/8-inch drill bit. This will prevent the screws from damaging the material.
Apply a thin layer of glue to each seam. Roo glue is recommended for melamine joints. Screw the sides to the top and bottoms and shelves, using 1 1/2-inch-long grabber screws and a power drill.
Apply a thin layer of glue around the back. Fasten the back to the sides, top, bottom and shelves, using 1 1/2-inch-long grabber screws and a power drill. Allow the cabinet to dry fully before moving. Failure to allow glue to dry will break the glue joints and weaken the cabinet.